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Liquid dielectric

About: Liquid dielectric is a research topic. Over the lifetime, 3702 publications have been published within this topic receiving 45150 citations.


Papers
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Proceedings ArticleDOI
09 Sep 2008
TL;DR: In this article, the Particle Image Velocimetry (PIV) method was adapted to electroconvective flow measurements and the choice and the size of seeding particles were discussed.
Abstract: It is well known that an isothermal dielectric liquid can be driven by electroconvection. It has been demonstrated that two phenomena could generate space charge in isothermal dielectric liquids and then induce a fluid movement. These two electroconvective effects are bulk conduction and ion injection. In order to improve the performance of electroconvective devices, the velocity of the flows must be recorded as accurately and precisely as possible. In this paper, the Particle Image Velocimetry (PIV) method that was originally developed in the field of experimental fluid mechanics is adapted to electroconvective flow measurements. The choice and the size of seeding particles are discussed. The influence of the seeding particle density on the current is measured. In this work, experiments were investigated done on a typical two-dimensional charged plume flow produced between a blade and a flat plate.

12 citations

Patent
28 Oct 2003
TL;DR: A neuromuscular disrupter gun and associated projectile is described in this paper, where the gun charges the projectile prior to discharge from the gun of the projectile, and the projectile holds the charge in flight and discharges on impact.
Abstract: A neuromuscular disrupter gun and associated projectile. The projectile contains a capacitor, having its dielectric made from liquid. The gun charges the projectile prior to discharge from the gun of the projectile. The projectile holds the charge in flight and discharges on impact. To provide appropriate contact points, the projectile either carries contact wires or is designed to open and emit the liquid upon impact.

12 citations

Patent
14 Mar 2006
TL;DR: In this paper, the latent heat of evaporation of the dielectric liquid coolant and increasing the rate recycling of the coolant as power output increases, temperature increases in the power electronics are controlled.
Abstract: Power electronics for electric traction motors used to drive automotive vehicles are cooled in a closed system by spraying a dielectric liquid coolant directly onto inverter circuitry. The liquid coolant changes phase and vaporizes as it absorbs heat from power transistors in inverter circuitry comprising the power electronics. The resultant vapor is condensed back to a liquid in a heat exchange arrangement having pipes carrying a second coolant from a radiator used to cool an engine or fuel cell stack in the automotive vehicle. Overspray coolant, which remains liquid, can also be cooled by the heat exchange arrangement. By utilizing the latent heat of evaporation of the dielectric coolant and increasing the rate recycling of the coolant as power output increases, temperature increases in the power electronics are controlled.

12 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical procedure based on the finite element method in combination with the Lagrangian technique was proposed to predict the time-dependent deformation of a dielectric drop which is suspended stationarily in another liquid under the influence of a uniform DC electric field.
Abstract: We present a numerical procedure based on the finite element method in combination with the Lagrangian technique to predict the time-dependent deformation of a dielectric drop which is suspended stationarily in another dielectric liquid under the influence of a uniform DC electric field. The effects of the electric field strength and the physical properties on the drop deformation are then shown. The computed results reveal that Taylor’s circulation appears in the drop in addition to the hyperbolic flow pattern due to the deformation, depending on the physical properties of the drop and continuous phases, and affects the drop deformation.

12 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202328
202267
202191
2020122
2019142
2018120